E is for the equator (ABC W)

The Earth’s diameter is wider at the Equator, creating an equatorial bulge.

Here’s something I actually had seldom thought about: what is the equator? Generally, it is “the intersection of the surface of a rotating sphere with the plane that is perpendicular to the sphere’s axis of rotation and midway between its poles.

“The latitude of the Earth’s equator is by definition 0° (zero degrees) of arc. In the cycle of Earth’s seasons, the plane of the equator passes through the Sun twice per year: at the March and September equinoxes. To an observer on the Earth, the Sun appears to travel North or South over [it]… at these times. Light rays from the center of the Sun are perpendicular to the surface of the Earth at the point of solar noon on the Equator.”

There are several countries that cross the imaginary line. Starting at the Prime Meridian and heading east Continue reading “E is for the equator (ABC W)”